System and methods for vehicle navigation

Systems and methods are provided for vehicle navigation. In one implementation, a system for correlating 3830 information collected from a plurality of vehicles relative to a common road segment comprises a processor programmed to receive 3820, from first and second vehicles, drive information including indicators of positions associated with detected semantic and non-semantic road features; correlate the drive information, wherein the correlating includes determining a refined position of the detected semantic and non-semantic road features based on the indicators of positions associated with the detected semantic and non-semantic road features; store 3840 the refined positions of the detected semantic and non-semantic road features in a map; and distribute 3850 the map to one or more vehicles for use in navigating the one or more vehicles along the common road segment.